Contract 0xf34e0cff046e154cafcae502c7541b9e5fd8c249 9

 
Txn Hash Method
Block
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0x25e1941a44dbfb6698e03320172a1917e85014d03aa47c60e1ea0c07a612feabApprove150107872024-05-27 11:55:216 hrs 45 mins ago0x164a236b13e11933f38d48f6326b87ebffbc8b5d IN  Thales: THALES Token0 ETH0.0000029264160.06271
0xab79dc31c15193e48d98184b934367443a10549d6aec3e9fa9dcb1cb89fe6f84Approve150075652024-05-27 10:07:578 hrs 32 mins ago0x917b4b0e86fc7766695095dd1a5292b3be8b2d14 IN  Thales: THALES Token0 ETH0.0000019844370.041912622
0x7579e5c099619ffe081c6297d33ce37df9d2c62d672bc0be78460b013999311eApprove150070252024-05-27 9:49:578 hrs 50 mins ago0x917b4b0e86fc7766695095dd1a5292b3be8b2d14 IN  Thales: THALES Token0 ETH0.0000022299840.046800792
0x9cdc2a55efe7e9a488ae2cb94f539dc92ec6a23f50ada59e46d4749856d1dbc6Approve149772022024-05-26 17:15:511 day 1 hr ago0x86e9c0717fc92674281f0e239f9b0a6bcc9570ec IN  Thales: THALES Token0 ETH0.0000026506270.056810868
0x5f8cf7295bc76d88715b2d9a572d3828fb997bbec7d007cef0ef41c96e46f4a1Approve149739302024-05-26 15:26:471 day 3 hrs ago0xacf4f945758304891645774db8a7243df416c0dc IN  Thales: THALES Token0 ETH0.0000037122890.0789
0x23df6ad8c964e149dbac1433363aeb204cdd8e3ab5bf1448f67fa7556e1e8ba7Approve149737992024-05-26 15:22:251 day 3 hrs ago0xdf0b15733ed5e9e14783afe51138485d8a1eb815 IN  Thales: THALES Token0 ETH0.0000037463950.0794
0x883ba948af6f7ce262bcb4865e3013abe57c3668fcf89bb6f57ff9e9c4f25685Approve149615662024-05-26 8:34:391 day 10 hrs ago0x855ef6f8b6c840d2caa38389624e66e4456a7e76 IN  Thales: THALES Token0 ETH0.0000035506020.076
0x6e8a3068df9dabbdc21e8852e1f495a88163db58c45bc2afa8453d90cf27eb6fApprove149545272024-05-26 4:40:011 day 14 hrs ago0x12799e9d0f3ae4cd3ca348b4b907344c37331f6e IN  Thales: THALES Token0 ETH0.0000080015250.172736075
0xfc757436bc939cf50bce1a025561f47e8a38665dc73935740113f950b8d1d0e9Approve149485612024-05-26 1:21:091 day 17 hrs ago0x823b8c5fa9d5b19649434dda4ee042ba94e7159e IN  Thales: THALES Token0 ETH0.0000021293170.045861685
0x34dfe17493a6edc58804a9b90bb2a222078aa9474b16946763c38e44b161a9c4Approve149461662024-05-26 0:01:191 day 18 hrs ago0x392ef7ccc4ea6972cbbb55a049f045be23ef83c8 IN  Thales: THALES Token0 ETH0.0000031981120.068936553
0x2f7a790a240ff24b25620c9a32e5877b1f65a059df34468c9fee21dc091327e8Approve149380872024-05-25 19:32:011 day 23 hrs ago0x2e1d3baf25903f0680e085731b37f5a6e2b86665 IN  Thales: THALES Token0 ETH0.0000025928160.0554
0xce36cd08aa0e167393331774b890a19e187d721a76bc982ab7ceef2c7d88e710Approve149098912024-05-25 3:52:092 days 14 hrs ago0xbf5beeffb60c9be21681254f2581ead4375c1a30 IN  Thales: THALES Token0 ETH0.0000046843210.101
0xb4eace396e2c12e4adad3380a62f3341fda5fa75e848e4beddacbf696f446397Approve148740702024-05-24 7:58:073 days 10 hrs ago0x9125912180cb0be1b3749e2b153c68ba993074eb IN  Thales: THALES Token0 ETH0.0000035079420.0753
0x9e0020c9a54a8cff51508e6a67050c75db7dbb7225e195cd385fe2b18246c4b3Approve148721162024-05-24 6:52:593 days 11 hrs ago0x9ba4e879f4016ac0610e19f9b9d62ae69382bf39 IN  Thales: THALES Token0 ETH0.0000040027850.086092917
0x33aab16df127ef761299aa4099a9eeb09d6f6633d0f44bbc770c521ecb794868Approve148696362024-05-24 5:30:193 days 13 hrs ago0xffd5b8150e837b263ef3d1d8d919174d59023243 IN  Thales: THALES Token0 ETH0.0000029440290.0633
0x4d3aeca0d5e16883a11f5e1c9e2ecff7e13e9e5b7ca4e6034377ecbd78f03748Approve148381482024-05-23 12:00:434 days 6 hrs ago0x075127a5a7fe48de533de4a8fe75c0854fcaa419 IN  Thales: THALES Token0 ETH0.000007756070.1665
0x05e4bf7094ca7204f24ff23927771d66840effc75f060b5ffaee12e9bdc355edApprove148332472024-05-23 9:17:214 days 9 hrs ago0x114e6758ac4d2e2b24b215db058237287a510095 IN  Thales: THALES Token0 ETH0.0000027686390.10428692
0x766b817748d4a5afb3223f81873c3993fe8523fb440758f3eab729dcd3cf4726Approve148332442024-05-23 9:17:154 days 9 hrs ago0x114e6758ac4d2e2b24b215db058237287a510095 IN  Thales: THALES Token0 ETH0.0000048431130.10428692
0x34c972eaf4a071e131cdb6dbc8812b8eefecae67c5ce4f9035ce0d55b01e841eApprove148214082024-05-23 2:42:434 days 15 hrs ago0x67f5e368d28835a8f6b8e5576b1e17ae2ce24769 IN  Thales: THALES Token0 ETH0.0000025876140.0552
0xac8ceb70dad1705135393305d353a08e2b8b50d38d4dde8a020efb7dfbf8672dApprove148060682024-05-22 18:11:235 days 29 mins ago0xe460c8fd3d455271819bdf5cf4d56cbbd0996e9d IN  Thales: THALES Token0 ETH0.0000037215830.079052803
0xc92e6475e5f06273c79a59d5734ee92612ceaeb4c06a181e8888c12a479fbf69Approve148008692024-05-22 15:18:055 days 3 hrs ago0xd987aaafd902db62365dc95acfb1eede8b61d5c4 IN  Thales: THALES Token0 ETH0.0000043125850.09135925
0x938058e721ea93bd9ffcc35abe1051636e367d2691a870e13f89a45b67dfd7e9Approve147984152024-05-22 13:56:175 days 4 hrs ago0xf3fe72b3b55b0404f2d8bac59518df924a36c3a7 IN  Thales: THALES Token0 ETH0.0000023846520.0806
0x1fb439399d1f2186c05499280a4b873902b2f1f505c8199a841ad5837be5a7c7Approve147886272024-05-22 8:30:015 days 10 hrs ago0xb7019930478fbcdf34e0f9f79ff399ba847c4b74 IN  Thales: THALES Token0 ETH0.0000032261140.0689
0x860e9f1e277754b25c731cefabb9239814b7950f6cdff59531df08e1cbd797d7Approve147871872024-05-22 7:42:015 days 10 hrs ago0x2d8ea9bcf57a8456085947ab4752f3f9104fc7db IN  Thales: THALES Token0 ETH0.0000020171870.0824
0x032d569352810a2c30808940220f491695d3d535e45ed3aa1431707d4541b8c0Approve147820012024-05-22 4:49:095 days 13 hrs ago0x98d925821767edcf7e773810e74244026b6e8a35 IN  Thales: THALES Token0 ETH0.0000025441270.05459158
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OVERVIEW

Thales Protocol provides an oracle-based automated liquidity solution that is used to create various types of on-chain Positional Markets limited only by the amount of data that is available to the blockchain.

Latest 1 internal transaction
Parent Txn Hash Block From To Value
0x2568a1747e1635cb083598a2cbb37c5a3ae83de48ebd4b6cb0eb1433428b798725323302023-08-12 15:26:47289 days 3 hrs ago 0xf23d369d7471bd9f6487e198723eea023389f1d4  Contract Creation0 ETH
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x50c5725949a6f0c72e6c4a641f24049a917db0cb
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
OptimismMintableERC20

Compiler Version
v0.8.15+commit.e14f2714

Optimization Enabled:
Yes with 999999 runs

Other Settings:
london EvmVersion
File 1 of 9 : OptimismMintableERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import { ILegacyMintableERC20, IOptimismMintableERC20 } from "./IOptimismMintableERC20.sol";
import { Semver } from "../universal/Semver.sol";

/**
 * @title OptimismMintableERC20
 * @notice OptimismMintableERC20 is a standard extension of the base ERC20 token contract designed
 *         to allow the StandardBridge contracts to mint and burn tokens. This makes it possible to
 *         use an OptimismMintablERC20 as the L2 representation of an L1 token, or vice-versa.
 *         Designed to be backwards compatible with the older StandardL2ERC20 token which was only
 *         meant for use on L2.
 */
contract OptimismMintableERC20 is IOptimismMintableERC20, ILegacyMintableERC20, ERC20, Semver {
    /**
     * @notice Address of the corresponding version of this token on the remote chain.
     */
    address public immutable REMOTE_TOKEN;

    /**
     * @notice Address of the StandardBridge on this network.
     */
    address public immutable BRIDGE;

    /**
     * @notice Emitted whenever tokens are minted for an account.
     *
     * @param account Address of the account tokens are being minted for.
     * @param amount  Amount of tokens minted.
     */
    event Mint(address indexed account, uint256 amount);

    /**
     * @notice Emitted whenever tokens are burned from an account.
     *
     * @param account Address of the account tokens are being burned from.
     * @param amount  Amount of tokens burned.
     */
    event Burn(address indexed account, uint256 amount);

    /**
     * @notice A modifier that only allows the bridge to call
     */
    modifier onlyBridge() {
        require(msg.sender == BRIDGE, "OptimismMintableERC20: only bridge can mint and burn");
        _;
    }

    /**
     * @custom:semver 1.0.0
     *
     * @param _bridge      Address of the L2 standard bridge.
     * @param _remoteToken Address of the corresponding L1 token.
     * @param _name        ERC20 name.
     * @param _symbol      ERC20 symbol.
     */
    constructor(
        address _bridge,
        address _remoteToken,
        string memory _name,
        string memory _symbol
    ) ERC20(_name, _symbol) Semver(1, 0, 0) {
        REMOTE_TOKEN = _remoteToken;
        BRIDGE = _bridge;
    }

    /**
     * @notice Allows the StandardBridge on this network to mint tokens.
     *
     * @param _to     Address to mint tokens to.
     * @param _amount Amount of tokens to mint.
     */
    function mint(address _to, uint256 _amount)
        external
        virtual
        override(IOptimismMintableERC20, ILegacyMintableERC20)
        onlyBridge
    {
        _mint(_to, _amount);
        emit Mint(_to, _amount);
    }

    /**
     * @notice Allows the StandardBridge on this network to burn tokens.
     *
     * @param _from   Address to burn tokens from.
     * @param _amount Amount of tokens to burn.
     */
    function burn(address _from, uint256 _amount)
        external
        virtual
        override(IOptimismMintableERC20, ILegacyMintableERC20)
        onlyBridge
    {
        _burn(_from, _amount);
        emit Burn(_from, _amount);
    }

    /**
     * @notice ERC165 interface check function.
     *
     * @param _interfaceId Interface ID to check.
     *
     * @return Whether or not the interface is supported by this contract.
     */
    function supportsInterface(bytes4 _interfaceId) external pure returns (bool) {
        bytes4 iface1 = type(IERC165).interfaceId;
        // Interface corresponding to the legacy L2StandardERC20.
        bytes4 iface2 = type(ILegacyMintableERC20).interfaceId;
        // Interface corresponding to the updated OptimismMintableERC20 (this contract).
        bytes4 iface3 = type(IOptimismMintableERC20).interfaceId;
        return _interfaceId == iface1 || _interfaceId == iface2 || _interfaceId == iface3;
    }

    /**
     * @custom:legacy
     * @notice Legacy getter for the remote token. Use REMOTE_TOKEN going forward.
     */
    function l1Token() public view returns (address) {
        return REMOTE_TOKEN;
    }

    /**
     * @custom:legacy
     * @notice Legacy getter for the bridge. Use BRIDGE going forward.
     */
    function l2Bridge() public view returns (address) {
        return BRIDGE;
    }

    /**
     * @custom:legacy
     * @notice Legacy getter for REMOTE_TOKEN.
     */
    function remoteToken() public view returns (address) {
        return REMOTE_TOKEN;
    }

    /**
     * @custom:legacy
     * @notice Legacy getter for BRIDGE.
     */
    function bridge() public view returns (address) {
        return BRIDGE;
    }
}

File 2 of 9 : ERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

File 3 of 9 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 4 of 9 : IOptimismMintableERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { IERC165 } from "@openzeppelin/contracts/utils/introspection/IERC165.sol";

/**
 * @title IOptimismMintableERC20
 * @notice This interface is available on the OptimismMintableERC20 contract. We declare it as a
 *         separate interface so that it can be used in custom implementations of
 *         OptimismMintableERC20.
 */
interface IOptimismMintableERC20 is IERC165 {
    function remoteToken() external returns (address);

    function bridge() external returns (address);

    function mint(address _to, uint256 _amount) external;

    function burn(address _from, uint256 _amount) external;
}

/**
 * @custom:legacy
 * @title ILegacyMintableERC20
 * @notice This interface was available on the legacy L2StandardERC20 contract. It remains available
 *         on the OptimismMintableERC20 contract for backwards compatibility.
 */
interface ILegacyMintableERC20 is IERC165 {
    function l1Token() external returns (address);

    function mint(address _to, uint256 _amount) external;

    function burn(address _from, uint256 _amount) external;
}

File 5 of 9 : Semver.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";

/**
 * @title Semver
 * @notice Semver is a simple contract for managing contract versions.
 */
contract Semver {
    /**
     * @notice Contract version number (major).
     */
    uint256 private immutable MAJOR_VERSION;

    /**
     * @notice Contract version number (minor).
     */
    uint256 private immutable MINOR_VERSION;

    /**
     * @notice Contract version number (patch).
     */
    uint256 private immutable PATCH_VERSION;

    /**
     * @param _major Version number (major).
     * @param _minor Version number (minor).
     * @param _patch Version number (patch).
     */
    constructor(
        uint256 _major,
        uint256 _minor,
        uint256 _patch
    ) {
        MAJOR_VERSION = _major;
        MINOR_VERSION = _minor;
        PATCH_VERSION = _patch;
    }

    /**
     * @notice Returns the full semver contract version.
     *
     * @return Semver contract version as a string.
     */
    function version() public view returns (string memory) {
        return
            string(
                abi.encodePacked(
                    Strings.toString(MAJOR_VERSION),
                    ".",
                    Strings.toString(MINOR_VERSION),
                    ".",
                    Strings.toString(PATCH_VERSION)
                )
            );
    }
}

File 6 of 9 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

File 7 of 9 : IERC20Metadata.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

File 8 of 9 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 9 of 9 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

Settings
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    "@rari-capital/=node_modules/@rari-capital/",
    "@rari-capital/solmate/=node_modules/@rari-capital/solmate/",
    "ds-test/=node_modules/ds-test/src/",
    "forge-std/=node_modules/forge-std/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
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      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

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":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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